Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 7421 AT&T - LOCAL

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
650-452 A South San Francisco CA SNFCCA01DS5  722      
650-452 1 South San Francisco CA SNFCCA01DS5  722      
650-690 A Palo Alto CA SNFCCA01DS5  722      
650-690 9 Palo Alto CA SNFCCA01DS5  722      
650-918 A San Mateo CA SNFCCA01DS5  722      
650-918 3 San Mateo CA SNFCCA01DS5  722      
651-367 A Twin Cities MN GLVYMNORVMD  628      
651-367 0 Twin Cities MN GLVYMNORVMD  628      
651-367 1 Twin Cities MN GLVYMNORVMD  628      
651-367 2 Twin Cities MN GLVYMNORVMD  628      
651-367 3 Twin Cities MN GLVYMNORVMD  628      
651-367 5 Twin Cities MN GLVYMNORVMD  628      
651-367 6 Twin Cities MN GLVYMNORVMD  628      
651-367 7 Twin Cities MN GLVYMNORVMD  628      
651-367 8 Twin Cities MN GLVYMNORVMD  628      
651-397 A North Branch MN GLVYMNORVMD  628      
651-397 9 North Branch MN GLVYMNORVMD  628   2023-08-05   
660-236 6 Marshall MO KSCYMO09DS2  524   2009-09-18   
661-341 A Lancaster CA SHOKCA024MD  730      
661-341 9 Lancaster CA SHOKCA024MD  730      
661-565 9 Bakersfield: Main DA CA BKFDCA114MD  734      
661-678 A Santa Clarita: Newhall-Castaic DA CA SHOKCA02DS2  730      
661-678 2 Santa Clarita: Newhall-Castaic DA CA SHOKCA02DS2  730      
661-678 4 Santa Clarita: Newhall-Castaic DA CA SHOKCA02DS2  730      
661-679 0 Bakersfield: North DA CA BKFDCA114MD  734      
661-889 A Bakersfield: Main DA CA MOJVCA02DS2  734      
661-889 9 Bakersfield: Main DA CA MOJVCA02DS2  734      
662-259 5 Oxford MS JCSNMSPSXMY  482   2007-07-09   
662-426 A Como MS JCSNMSPSDS4  482      
662-426 9 Como MS JCSNMSPSDS4  482      
667-279 A Bishopville MD SLBRMDSBXQX  242      
667-279 9 Bishopville MD SLBRMDSBXQX  242   2020-05-08   
667-283 A Fork MD BLTMMDCHXAX  238      
667-283 9 Fork MD BLTMMDCHXAX  238   2020-08-24   
669-800 3 San Jose: West DA CA SNJSCA02DS3  722   2013-02-18   
678-456 A Cumming GA MNTIGAMA3MD  438      
678-456 1 Cumming GA MNTIGAMA3MD  438      
678-577 A Atlanta Northeast GA MNTIGAMA1MD  438      
678-577 5 Atlanta Northeast GA MNTIGAMA1MD  438      
678-724 A Atlanta South GA ESPNGAAT5MD  438      
678-724 4 Atlanta South GA ESPNGAAT5MD  438      
678-792 1 Cartersville GA ATLNGATLXDX  438   2002-11-09   
680-225 A Minoa NY SYRCNYSUX2Y  136      
680-225 9 Minoa NY SYRCNYSUX2Y  136   2021-06-17   
681-390 A Milton WV CHTNWVLEXAX  254      
681-390 9 Milton WV CHTNWVLEXAX  254   2022-06-15   
682-703 6 Fort Worth TX FTWOTXEDDS4  552   2014-05-05   
689-310 A Orlando FL ORLDFLMAYAY  45806      
689-310 9 Orlando FL ORLDFLMAYAY  45806   2023-04-26   
701-300 A Dickinson ND BSMRNDJCKMD  638      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.